v0.3.0

• Render VCalendar, VEvent instances, etc just by calling their toString() method
• Set any properties
• Set any propery parameters
• Easily generate invites with VCalendar.createEvent(...)
• Support any VEvent specific iTIP / RFC 5546 functions:
  • change participant status (accept, decline, delegated) with VCalendar.replyWithParticipantStatus(...)
  • delegate to another attendee with VCalendar.delegate(...)
  • create a counter proposal with VCalendar.counter(...)
  • accept a counter proposal with VCalendar.acceptCounter(...)
  • reject a counter proposal with VCalendar.declineCounter(...)
  • cancel an event for all with VCalendar.cancelEvent(...)
  • cancel an event for specific attendees with VCalendar.cancelEventForAttendees(...)
• Improve documentation